β-Amino-4-octylbenzenebutanol Hydrochloride is used in the study of antibiotics, such as the immunosuppressive activity. Fingolimod (F805000) impurity. Fingolimod is a derivative of ISP-1 (myriocin), a fungal metabolite of the Chinese herb Iscaria sinclarii as well as a structural analogue of Sphingosine.